* {
  margin: 0;
  padding: 0;
}
html {
  position: fixed;
  width: 100%;
  height: 100%;
  background: url(../images/bgc.jpg) no-repeat top center;
  filter: alpha(opacity=70);
  -moz-opacity: 0.7;
  opacity: 0.7;
  z-index: -1;
}
a {
  text-decoration: none;
}
.box,
.change_box {
  width: 400px;
  height: 550px;
  background: rgba(160, 180, 220, 0.5);
  padding: 10px;
  margin-left: 50%;
  margin-top: 80px;
  border-radius: 15px;
  text-align: center;
  color: aliceblue;
  font-size: 18px;
  font-family: "Franklin Gothic Medium", "Arial Narrow", Arial, sans-serif;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
}
.box:hover,
.change_box:hover {
  box-shadow: 0px 0px 20px skyblue;
}
.box div,
.change_box div {
  height: 20px;
}
.box h1,
.change_box h1 {
  height: 60px;
  line-height: 60px;
  margin-bottom: 15px;
  border-bottom: 2px solid skyblue;
  text-align: center;
  color: white;
}
.box input,
.change_box input {
  margin: 12px 10px;
  width: 300px;
  height: 35px;
  color: aliceblue;
  font-size: 18px;
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid #abd4e4;
  border-radius: 2px;
  outline: none;
}
.box input:hover,
.change_box input:hover {
  background-color: #99afd1;
}
.box input::-webkit-input-placeholder,
.change_box input::-webkit-input-placeholder {
  font-size: 13px;
  color: #ccc;
}
.box input::-moz-placeholder,
.change_box input::-moz-placeholder {
  font-size: 13px;
  color: #ccc;
}
.box input::placeholder,
.change_box input::placeholder {
  font-size: 13px;
  color: #ccc;
}
.told {
  position: fixed;
  left: 40%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  top: 45%;
  -webkit-transform: translateY(-50%);
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 15rem;
  height: 8rem;
  padding: 1rem;
  border-radius: 2rem;
  z-index: 100;
  background-color: #fff;
  border: 0.125rem solid skyblue;
  box-sizing: border-box;
}
.told:hover {
  box-shadow: 0px 0px 20px skyblue;
}
.told button {
  position: absolute;
  top: 1rem;
  right: 1rem;
}
.told p {
  color: red;
}
.short {
  width: 5rem;
  background-color: white;
  border: 0.125rem solid skyblue;
}
